Home / 1,471.04-2,029.80-911.54

Finding the Fourth Proportional to 1,471.04, 2,029.80 and 911.54

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Solution

The fourth proportional to 1,471.04, 2,029.80 and 911.54 is: 1,257.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,471.04 : 2,029.80 = 911.54 : x
  2. Step 2: Convert to fraction form
    1,471.04/2,029.80 = 911.54/x
  3. Step 3: Cross multiply
    1,471.04x = 2,029.80 × 911.54
  4. Step 4: Simplify right side
    1,471.04x = 1,850,243.89
  5. Step 5: Solve for x
    x = 1,850,243.89/1,471.04
  6. Step 6: Final answer
    x = 1,257.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.